Radio Shack TRS-80 Trsdos & Disk Basic Reference Manual page 51

TRSDOS Commands
-
DRIVE
1
MANUAL
—
09/01/78
VIDSCflN/CMD
I
MENU/TXT
CHESS/CMD
P
TEST/BRS
P
DOS
REflDV
All
files
are
protected with
two passwords, an access
and an
update password. Access and update passwords
may
be
identical,
and they
may
consist
of
all
blanks.
Use
of the update password
grants
total privilege
to a
file
-
you
can
kill,
rename,
write, etc.
Use of the access
password,
on the other
hand,
grants a limited
privilege, as
specified
by
a
PROT
parameter
in
the
ATTRIB
command.
The
protection levels
form
a
hierarchy,
and each
level
implies
access to
all
lower
levels.
level
privilege
KILL
RENAME
WRITE
READ
EXEC
total privilege
rename, write, read,
execute
write, read,
execute
read,
execute
execute only
When
you
create
a
file,
the
password
you
specify
becomes both
the access
and
the
update password.
(If
you
don't
specify a
password, a string
of
8
blanks
is
assigned
as
a
default
password
for
both
access
and
update.)
To
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